Hammer



FIG. 1 is a perspective view of a hammer showing our new design;

FIG. 2 is a front elevational view of the hammer shown in FIG. 1, the rear being a mirror image of the front;

FIG. 3 is a right side elevational view of the hammer shown in FIG. 1, the left side being a mirror image of the right side;

FIG. 4 is a top plan view of the hammer shown in FIG. 1; and,

FIG. 5 is a bottom plan view of the hammer shown in FIG. 1. 

The ornamental design for a hammer, as shown and described. 